Web Briefs, December EA

Our new, Blog-version of Web Briefs includes links to the websites/internet references we believe will be useful to persons in the electromechanical industries.  Previously listed in the magazine, these web briefs allow you to be one click away from your desired destination:

Measurlogicwww.measurlogic.com: papers and articles on power quality; effect of voltage dips on motors and contactors including torque, reacceleration; planning solutions for voltage dip problems; causes of voltage dips.

 
Systems Analysis, Inc.—www.skm.com: “Application Guides” on arc flash hazard evaluation and mitigation; equipment damage curves; basics of overcurrent coordination for conductors, circuit components, and machines; sample specifications for power system study procedures.

 
Lazar’s Power Electronics Guidewww.smps.us: transformer design principles; turns/conductor calculator; magnetics handbook, including magnetic core properties, eddy current losses, equivalent circuit, leakage inductance; core loss calculator for non-sinusoidal waveforms; customer guide to backup generator sizing and selection.

 
Zero Surge Inc.—www.zerosurge.com: glossary of surge protection device terms from “AC” to “Wide Voltage Range”; technical briefs on how surge protection works; technical papers from power quality conferences on wide voltage range surge protection; “The truth about MOV’s”; articles on surge protection applications and safety; FAQ’s on joule ratings, response time, surge diversion; surge causes and magnitude.

 
Electrical Technologywww.electricaltechnology.org: tutorials on LED circuit behavior; electrical/electronic fundamentals; electrical wiring and symbols; three-phase circuits; motors and transformers; power system protection and troubleshooting; solar panel/system installation and operation; battery charging.

 

Technology Transfer Serviceswww.techtransfer.com: all about bolts/screws: terminology, standard thread/fit data, mechanical properties (strength, ductility, hardness); materials; torque and tension (tightening methods, torque measurement); preload; joint vibration and creep; preventing loosening.

 
Pump Worldwww.pumpworld.com: tutorials and calculators on pump performance, installation and troubleshooting; links to pump manufacturers; data on centrifugal, positive displacement, and rotary pump technology, including specific speed, performance curves, definitions, terminology, affinity laws; dynamic head; NPSH; gland and seal types; chemical resistance charts.

 
ATCO Emissions Managementwww.atcoem.com/Resources/Documents/Noisecontrolhandbook.pdf: 61-page handbook on industrial noise control; fundamentals of sound; noise spectrum and octave bands; decibel scales and loudness; sound pressure and sound power; source and path specifics; sound absorbing/damping materials; vibration isolation; noise control—attenuation, barriers, enclosures.

 
Aeroventwww.aerovent.com: technical notes of fan engineering topics, including field testing of fans, understanding fan curves, effects of temperature and altitude on fans; pressure losses from fan accessories; fan sound and vibration; vibration isolation; fan motor selection and application guide; fan maintenance and troubleshooting; plenum fan application guidelines; spark-resistant fan construction; V-belt fan drives; fan application case studies.

 
Philips Lumileds Lighting Co.—www.philipslumileds.com: articles and white papers on LED lamps and systems (evaluating lifetime behavior, optical measurement guidelines); maintenance; avoiding current spikes; understanding efficiency claims; international case studies.

 
Welding Information Centerwww.weldinginfocenter.com: welding basics; welding materials and consumables; guidelines for welding cast iron and aluminum, and welding under water; welding health and safety (association with Parkinson’s Disease; ANSI standard for safety in welding, cutting, and allied processes; helmets and eye protection; numerous welding safety guides; fact sheets on fumes, radiation, noise, and electrical hazards; history of litigation involving welding rods and health concerns); common questions on welding.

Edited by the EA staff

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